332520

Appears in sequences

• a(n) = n*(n^2 - 1)*(n + 2)*(n^2 + 4*n + 6)/72.at n=16A054563
• Hexagonal numbers for which both the sum of the digits and the product of the digits are also hexagonal numbers.at n=35A117064
• Number of rooted identity trees with n nodes and 8-colored non-root nodes.at n=6A255520
• Triangular numbers k such that phi(k) is a square number, where phi(k) is the Euler totient function (A000010).at n=19A287473